Panic-bolt.



A. ARENSKE E. L. THIGH.

PANIC BOLT.

APPLICATION FILED JANA, 1910.

961,092. Patented June 14,1910.

3 SHEETS-SHEET 1.

A. ARENS & B. L. TEIGH.

PANIC BOLT.

APPLIGA'QIQN FILED JAN. 4, 1910. 961,092. Patented June 14,1910.

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PANIG BOLT.

APPLIGATION FILED hum, 1910.

Patented June 14, 1910.

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UNITED STATES PATENT OFFICE.

AUGUST ARENS AND ERNEST L. TEICI-I, OF NEW BRITAIN, CONNECTICUT,ASSIGNORS TO P. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATIONOF CON- PANIC-BOLT.

To all whom it may concern:

Be it known that we, AUcUsT ARENs and ERNEST L. TEICH, citizens of theUnited States, residing at New Britain, county of Hartford, State ofConnecticut, respectively, have invented certain new and usefulImprovements in Panic-Bolts, of which the following is a full, clear,and exact description.

Our invention relates to latch mechanism particularly adapted to exitdoors, the ob ject of the invention being to provide improvements inconstruction whereby various features of advantage are attained,including easy and quick releasing of the latch mechanism whereby thedoor may freely open in the event of panic, one of the main features ofthe mechanical improvement relating to the construction of the means foroperating the latch from the inner side of the door.

In the accompanying drawings Figure l is a view of a portion of theinner side of a door equipped with our invention. Fig. 2 is a front edgeView of the parts shown in Fig. 1, said view being partly in section.Fig. 3 is a plan view of the parts shown in Fig. 2, said view also beingpartly in section. Fig. at is a view of the latch mechanism detached,the cap plate being removed. Fig. 5 is a section on the line ac-m ofFig. 4. Fig. 6 illustrates an edge and side elevation of one of thedetails detached. Fig. 7 illustrates a plan and side elevation ofanother detail. Fig. 8 is a plan view of a detached detail.

First referring to Fig. 1 it will be seen that the latch mechanismemployed is of the usual mortise type and contains a spring advancedlatch bolt 1 mounted in a case 2. 2 is a cap for said case. 3 is aroll-back operatively connected with the tail of the latch bolt 1 in anysuitable manner, said rollback 3 being operable by a spindle 4 which isarranged to project outwardly relatively to the lock to carry at itsouter end an ordinary latch operating device such as the wellknown knob(not shown). 5 is a tilting lever (independent of the roll-back 3) whichengages a lifter 7 arranged to operatively engage a bell crank lever 8mounted in the case, which lever is also arranged to engage the tail ofthe latch bolt. The roll-back is restored to its normal position (Fig.4) by a spring pressed lever 9. 10 is a dogging Specification of LettersPatent.

Application filed January 4, 1910.

Patented June 14, 1910. Serial No. 536,262.

device for the roll-back 3. This dogging device may be actuated in anydesirable manner, the purpose of the same being to prevent the operationof the latch 1 by the roll-back 3, but leaving the latch always free tobe operated by the indoor operating mechamsm.

The means for operating the latch mechanism from the inner side of thedoor is preferably constructed as follows: 11 is a lever pivoted at 14to swing on a horizontal plane, the mounting for said lever comprising abracket 12 arranged to be secured to the inner side of the door. Thetilting lever 5 is pivotally mounted at 15 to said bracket, saidmounting being intermediate the length of said lever 5, so that theforwardly projecting end of the same may operate under the lifter 7 ofthe latch. A suitable clearance notch is of course provided in thematerial of the door to permit the forward end of the lever 5 to tilt upand down without obstruction. The rear of the lever 5 is provided with acam 16 (or equivalent means). 17 is a hub rotated by the swinging lever11 and constructed to cooperate with said cam 16, so that when said hub17 is swung, said lever 5 will be tilted. A suitable sprlng 18 may beemployed to return the tilting lever 5 to its normal position (indicatedin Fig. 2). 19 is a return spring for the member 17, said spring 19being anchored at one end of the bracket 12 and secured at its other endto said rotatable member 17. 20 is a stop for limiting the returnmovement of the swinging lever 11. 21 is one end of a crossbar arrangedto extend in a substantially horizontal plane across the inside of thedoor to which the latch is applied. One end of this cross-bar 21 ispivoted at 22 to the swinging lever 11, while the other end is connectedin any well known manner to the door to which the latch is to beapplied, said mounting permitting the crossbar 2]. to partake of saidmovement in a horizontal plane.

It will now be seen that pressure applied toward the inner side of thedoor is bound to encounter the cross-bar 21, and will, by reason of thefact that said bar is mounted to swing in a horizontal plane, cause saidbar to move toward the door. This movement will swing the lever 11 andwill thereby cause the hub 17 to operate upon the cam 16 of the lever 5,thereby tilting the latter so as to move its inner end up against thelifter T to retract the latch through the medium of the bell-crank 8.The moment the latch is retracted, the same pressure causes the door tomove outwardly and open. By this simple means, safety to the occupantsof a building is guaranteed, and means is furnished, entirelyindependent from the usual latch operating means, namely, the knob andknob spindle and the roll-back mechanism adapted thereto, whereby thelatch may be retracted with certainty at any time by force or pressureapplied toward the door from the inside. In this connection, it will, ofcourse, be understood that the exit doors to which we have referred openoutwardly so that in the event of panic on the inside of the building,hasty exit may be had.

From the foregoing it will be seen that the mechanism may be easilyapplied to a door in the same manner as an ordinary mortise lock, thatpart of the door cut away to admit the lever 5 and to afford suflicientfreedom for operation being covered by theback-plate of the bracket 12,which may be of any suitable pattern to produce any desired escutcheoneffect. In the event the latch mechanism is of the ordinary mortisetype, in order to adapt it for use with this operative device, all thatis required is the substitution of a suitable latch mechanism to permitthe same to be operated by the lever 5, one specimen of such a latch1nechanism being illustrated in detail in Fig. at.

What we claim is:

1. In a latch mechanism, a latch bolt, means attached to said mechanismfor operating said latch bolt from the outside of a door to which thelatch is applied, and means independent thereof for operating the latchbolt from the inner side of the door, said second mentioned operatingmeans comprising a forwardly projecting vertically tilting latchoperating member projecting into the door to which the latch is applied,a cam on the rear end thereof, and a manually operable horizontallyswinging lever arranged for cooperation with said cam for impartingmotion thereto when said manually opcrable member is moved.

2. In a latch mechanism, a latch bolt, means for operating said latchbolt from the outside of a door to which the latch is ap plied, andmeans independent thereof for operating the latch bolt from the innerside of the door, said second mentioned operating means comprising aforwardly projecting vertically tilting latch operating member, a cam onthe rear end thereof, and a manually operable horizontally swinginglever arranged for cooperation with said cam for imparting motionthereto when said manually operable member is moved, said manul I l lally operable member including a rotatable hub portion and a cam thereonfor engagement with the first mentioned cam.

In a latch mechanism, a latch bolt, means for operating said latch boltfrom the outside of a door to which the latch is applied, and meansindependent thereof for operating the latch bolt from the inner side ofthe door, said second mentioned operating means including a verticallytilting lever, a cam associated therewith, and an 0scillating memberarranged for cooperation with said cam for impart-ing motion theretowhen oscillated, said oscillating member including a hub portion and ahorizontally swinging lever arm and a horizontally extending barpivotally connected to said lever arm.

l. In a panic door latch, a latch, means for operating the samecomprising a vertically tilting lever with connections between saidlever and latch, an operating lever arranged to swing in a horizontalplane with means for securing the same to the surface of the door towhich the latch is to be applied and a cam connection between thepivoted end of said swinging lever and the rear end of the tilting leverfor transmitting the movement of the former to the latter.

5. In a panic door latch, a latch, means for operating the samecomprising a vertically tilting lever with connections between saidlever and latch, an operating lever arranged to swing in a horizontalplane with means for securing the same to the surface of the door towhich the latch is to be applied and a cam connection between thepivoted end of said swinging lever and the rear end of the tilting leverfor transmitting the movement of the former to the latter, a verticalpivotal mounting for said operating lever and a horizontal pivotalmounting for said tilting levers said mountings bein connected wherebythe parts may be bodil applied to a door.

6. In a panic door bolt, a latch, means for operating the samecomprising a vertically tilting lever with connections between saidlever and latch, an operating lever arranged to swing in a horizontalplane with means for securing the same to the surface of the door towhich the latch is to be applied and a cam connection between thepivoted end of said swinging lever and rear end of the tilting lever fortransmitting the movement of the former to the latter, a pivotalmounting for said tilting lever and a pivotal mounting for saidoperating lever, said pivotal mount-- ings being arranged atsubstantially right angles to each other and being connected whereby theparts may be bodily applied to a door.

7. In a panic door bolt, a latch, a vertically sliding latch retractingmember, a swinging operating device mounted to turn upon a verticalaxis, and including a bar arcepting the latch and the connections be- 6ranged to extend horizontally across a door tween the latch retractingmember and said to which the mechanism is applied, operalatch.

tlve means of connectlon between the p1v- AUGUST ARENS.

.; oted end of said swinging operating device ERNEST T131011 and thesliding latch retracting member,

operative means of connection between said Vitnesses:

latch retracting member and said latch, and G. ERNEST Roo'r, a supportin common to all of said parts eX- WVM. V. COLLINS.

